Intergrowth Bi2WO6-Bi3TiNbO9 ferroelectrics with high ionic conductivity -: art. no. 192906

被引:36
|
作者
Yi, ZG
Li, YX
Wen, ZY
Wang, SR
Zeng, JT
Yin, QR
机构
[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Ceram, Adv Funct Ceram Engn Res Ctr, Shanghai 200050, Peoples R China
关键词
D O I
10.1063/1.1925760
中图分类号
O59 [应用物理学];
学科分类号
摘要
Two dielectric relaxation loss peaks associated with oxygen-ion diffusion in the intergrowth Bi2WO6-Bi3TiNbO9(Bi5TiNbWO15) bismuth layered ferroelectrics were observed. The activation energy and the relaxation time at infinite temperature, for these two peaks, were determined to be (0.89 eV, 1.3 x 10(-13) s) and (0.84 eV, 3.6 x 10(-10) s). The ac impedance spectroscopy indicated that the Bi5TiNbWO15 ceramic is an ionic conductor with an electrical conductivity of approximately 2.6 x 10(-2) S/cm at a temperature of 1073 K. (c) 2005 American Institute of Physics.
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页码:1 / 3
页数:3
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